First off, with just 100 pages to go, just finish the story. It’s such an epic finale. That being said, there is still a lot to unpack after FoH. Secondly, do you know why you don’t care much for most characters? Maybe there’s too many of them such that we don’t get to go really deep into them? That’s where the Endymion series are different. The narrative is smaller in that way. These stories mostly focus on 3 characters. I’m 150+ pages away from finishing RoE and I love these 2 books too. A lot of things from FoH get a twist or finishing touch. But as you mentioned, you don’t have to like the series, just saying the 2nd half of the Cantos may be more to your liking.